Remove double declaration of mbedtls_ssl_list_ciphersuites

Raised by TrinityTonic. #1359
diff --git a/ChangeLog b/ChangeLog
index 348864c..5d69704 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -13,6 +13,10 @@
      Therefore, mbedtls_platform_zeroize() is moved to the platform module to
      facilitate testing and maintenance.
 
+Bugfix
+   * Fix redundant declaration of mbedtls_ssl_list_ciphersuites. Raised by
+     TrinityTonic. #1359.
+
 = mbed TLS 2.9.0 branch released 2018-04-30
 
 Security